Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong do chat snippets" » "dong dao chat snippets", "dong co chat snippets", "dang do chat snippets", "dong doc chat snippets", "dong don chat snippets", "dong do nhat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong do chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong do chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong do chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong do chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.